CONTRACTUAL RIGHTS AND OBLIGATIONS - Contractual obligations (Details) $ in Millions	Dec. 31, 2019 USD ($)
Contractual Obligations [Line Items]
Borrowings	$ 863.4
Interest payments related to scheduled interest fixing	97.2
Estimated variable interest payments	34.1
Newbuilding installments	51.2
Committed scrubber installations	32.0
Trade payables and other obligations	76.3
Total	1,155.2
2020
Contractual Obligations [Line Items]
Borrowings	101.2
Interest payments related to scheduled interest fixing	33.8
Estimated variable interest payments	4.3
Newbuilding installments	51.2
Committed scrubber installations	32.0
Trade payables and other obligations	76.3
Total	298.8
2021
Contractual Obligations [Line Items]
Borrowings	326.9
Interest payments related to scheduled interest fixing	25.4
Estimated variable interest payments	6.7
Newbuilding installments	0.0
Committed scrubber installations	0.0
Trade payables and other obligations	0.0
Total	359.0
2022
Contractual Obligations [Line Items]
Borrowings	119.5
Interest payments related to scheduled interest fixing	13.1
Estimated variable interest payments	4.4
Newbuilding installments	0.0
Committed scrubber installations	0.0
Trade payables and other obligations	0.0
Total	137.0
2023
Contractual Obligations [Line Items]
Borrowings	30.8
Interest payments related to scheduled interest fixing	10.0
Estimated variable interest payments	3.6
Newbuilding installments	0.0
Committed scrubber installations	0.0
Trade payables and other obligations	0.0
Total	44.4
2024
Contractual Obligations [Line Items]
Borrowings	82.8
Interest payments related to scheduled interest fixing	8.0
Estimated variable interest payments	3.5
Newbuilding installments	0.0
Committed scrubber installations	0.0
Trade payables and other obligations	0.0
Total	94.3
Thereafter
Contractual Obligations [Line Items]
Borrowings	202.2
Interest payments related to scheduled interest fixing	6.9
Estimated variable interest payments	11.6
Newbuilding installments	0.0
Committed scrubber installations	0.0
Trade payables and other obligations	0.0
Total	$ 220.7

The amount of capital commitments for which the entity has entered into a contract. [Refer: Capital commitments]

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2019-01-01
-Paragraph 112
-Subparagraph c
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_112_c&doctype=Standard
-URIDate 2019-03-27

+ Details

Name:	ifrs-full_ContractualCapitalCommitments
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The amount of trade payables and other payables. [Refer: Trade payables; Other payables]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2019-01-01
-Paragraph 54
-Subparagraph k
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_54_k&doctype=Standard
-URIDate 2019-03-27

+ Details

Name:	ifrs-full_TradeAndOtherPayables
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table.

+ References

No definition available.

+ Details

Name:	trmd_ContractualObligationsLineItems
Namespace Prefix:	trmd_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the amount related to estimated variable interest payments.

+ References

No definition available.

+ Details

Name:	trmd_EstimatedVariableInterestPayments
Namespace Prefix:	trmd_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Represents the amount of interest payments for scheduled interest fixing.

+ References

No definition available.

+ Details

Name:	trmd_InterestPaymentsForScheduledInterestFixing
Namespace Prefix:	trmd_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The amount of future minimum lease payments payable under non-cancellable operating leases. Minimum lease payments are payments over the lease term that the lessee is or can be required to make, excluding contingent rent, costs for services and taxes to be paid by, and reimbursed to, the lessor, together with: (a) for a lessee, any amounts guaranteed by the lessee or by a party related to the lessee; or (b) for a lessor, any residual value guaranteed to the lessor by: (i) the lessee; (ii) a party related to the lessee; or (iii) a third party unrelated to the lessor that is financially capable of discharging the obligations under the guarantee.

+ References

No definition available.

+ Details

Name:	trmd_MinimumLeasePaymentsPayableUnderNoncancellableOperatingLeaseIas17
Namespace Prefix:	trmd_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Represents the amount related to mortgage debt and bank borrowings.

+ References

No definition available.

+ Details

Name:	trmd_MortgageDebtAndBankBorrowings
Namespace Prefix:	trmd_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Represents the amount related to newbuilding installments.

+ References

No definition available.

+ Details

Name:	trmd_NewbuildingInstallments
Namespace Prefix:	trmd_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

Name:	ifrs-full_MaturityAxis=ifrs-full_NotLaterThanOneYearMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_MaturityAxis=ifrs-full_LaterThanOneYearAndNotLaterThanTwoYearsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_MaturityAxis=ifrs-full_LaterThanTwoYearsAndNotLaterThanThreeYearsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_MaturityAxis=ifrs-full_LaterThanThreeYearsAndNotLaterThanFourYearsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_MaturityAxis=ifrs-full_LaterThanFourYearsAndNotLaterThanFiveYearsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_MaturityAxis=ifrs-full_LaterThanFiveYearsAndNotLaterThanTenYearsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: